基于随机通信逻辑的网络控制器设计  

Design of Networked Controller Based on Stochastic Communication Logic

作　　者：胡超芳[1] 宗群[1] 孙连坤[2] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072 [2]天津工业大学计算机科学与软件学院,天津300160

出　　处：《计算机工程》2010年第24期102-103,106,共3页Computer Engineering

基　　金：国家自然科学基金资助项目(60874073);天津市科技计划基金资助项目(08ZCKFGX02900);天津市自然科学基金资助项目(08JCYBJC11900)

摘　　要：设计具有带宽约束的网络控制器,采用带时倚强度的泊松过程形成随机通信逻辑调度策略,实现系统状态的有限次更新,根据其马尔科夫跳变本质,基于更新时刻特性,协同设计控制器。仿真结果表明,引入随机通信逻辑能减少状态更新的次数,降低网络带宽对控制性能的影响,提高系统的动态性能。The controller design for networked controller with bandwidth constraints is studied in this paper. The scheduling strategy based on stochastic communication logic is presented using Poisson process with time-dependent intensity. Then the limit updates are obtained. According to its Markov jump linear characteristic, the controller is co-designed based on update time. Simulation results show that the times of state update are reduced, the influence of bandwidth on control performance is decreased, and the dynamic performance of the system is improved by means of introducing stochastic communication logic.

关 键 词：网络控制系统 随机通信逻辑 马尔科夫链 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]